摘要
电力系统频率是衡量电力系统电能质量的典型指标之一,频率的动态变化情况也影响着电力系统的安全稳定运行,电力系统频率的变化规律是一项值得深入研究的课题。研究电力系统频率时空分布特性的机理,分析了电力系统频率特性的影响因素,并揭示其影响机理,并通过仿真算例验证本文结论的有效性。通过分析可知,系统的频率存在时空分布特性,受扰后系统频率波动的大小与功率差额大小成正比,与发电机惯性时间常数成反比。
The frequency of the power system is one of the typical indicators to measure the power quality of the power system.The dynamic change of frequency also affects the safe and stable operation of the power system.The change law of the power system frequency is a subject worthy of further study.This paper studies the mechanism of the spatial and temporal distribution characteristics of the power system,analyzes the influencing factors of the power system,and verifies the validity of the conclusion through simulation examples.According to the analysis in this paper,the frequency of the system has a spatial and temporal distribution characteristic,and the frequency fluctuation of the disturbed system is directly proportional to the power difference and inversely proportional to the inertia time constant of the generator.
作者
刘闯
于锡平
张师
LIU Chuang;YU Xi-ping;ZHANG Shi(State Grid Jilin Electric Power Co.Ltd.,UHV Company,Changchun 130000,China;School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China)
出处
《电气开关》
2025年第1期86-89,共4页
Electric Switchgear
关键词
电力系统频率
惯性时间常数
功率差额
频率分布
frequency of power system
inertia time constant
power difference
frequency distribution
